The surface tension of oxygen and nitrogen was calculated using molecular dynamics simulation. Due to the inhomogeneity of the system, the long range correction approach of Janeček [1] was used. The results regarding the temperature dependence of the surface tension were compared to simulation data by Neyt et al. [2] and experimental data. Because of simpler statistical analogs of certain therm...

The 17th International Conference on Systems, Signals and Image Processing (IWSSIP) was held in Rio de Janeiro, Brazil, June 17–19, 2010. The conference was organized by Federal Fluminense University (UFF), in co-operation with SBC (Sociedade Brasileira de Computação), ABCM (Associação Brasileira de Ciências Mecânicas), ABEPRO (Associação Brasileira de Engenharia de Produção), and IEEE Region 9...

H.-C. LI, C. MCCABE, S. T. CUI, P. T. CUMMINGS and H. D. COCHRAN* Department of Chemical Engineering, University of Tennessee, Knoxville, TN 37996-2200, USA Department of Chemical Engineering, Colorado School of Mines, Golden, CO 80401-1887, USA Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6181, USA Department of Chemical Engineering, Vanderbilt University, Nas...

Molecular dynamics simulations were used to study the change in the mechanism of iron cluster melting with increasing cluster size. Melting of smaller clusters (e.g., Fe55 and Fe100) occurs over a large temperature interval where the phase of the cluster repeatedly oscillates between liquid and solid. In contrast, larger clusters (e.g., Fe300) have sharper melting points with surface melting pr...

This work examines force modeling and softwarebased commutation for closed-loop control of planar linear motors, motivated by the need for a robust and versatile planar robot for precision assembly. The approach taken is to make measurements of the static and dynamic force capabilities of the motor as directly as possible, and determine the applicability of simple models commonly used. Measurem...

The Gradient Vector Flow (GVF) is a vector diffusion approach based on Partial Differential Equations (PDEs). This method has been applied together with snake models for boundary extraction medical images segmentation. The key idea is to use a diffusion-reaction PDE to generate a new external force field that makes snake models less sensitivity to initialization as well as improves the snake’s ...

We present a local approach for planning the motion of a car-like robot navigating among obstacles, suitable for sensor-based implementation. The nonholonomic nature of the robot kinematics is explicitly taken into account. The strategy is to modify the output of a generic local holonomic planner, so as to provide commands that realize the desired motion in a leastsquares sense. A feedback acti...

Despite current advances in multimedia environments, tracing the geometrical structures of graphical images using force feedback remains an important research issue. In this paper, the development and implementation of a Multi-Modal Display System (MMDs) for tracing 2D boundaries in graphic images are discussed. A method is proposed that provides a type of haptic feedback designed to assist a u...

Dihedral angle potentials, which are used in many force fields for molecular dynamics simulations, model the energy of twisting a bond as a function of the angle φijkl between the surfaces spanned by the particles pi, pj and pk, and pj , pk and pl respectively. The potential function may have several forms. In the amber [4], cff [6], charmm [7], dreiding [8], gromos [9] and shapes [1] force fie...